Move StartsWith[ASCII] to base namespace.

chrome/browser/media_galleries/fileapi/native_media_file_util.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/media_galleries/fileapi/native_media_file_util.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 19 matching lines @@
 }
 
 base::File::Error IsMediaHeader(const char* buf, size_t length) {
   if (length == 0)
     return base::File::FILE_ERROR_SECURITY;
 
   std::string mime_type;
   if (!net::SniffMimeTypeFromLocalData(buf, length, &mime_type))
     return base::File::FILE_ERROR_SECURITY;
 
-  if (StartsWithASCII(mime_type, "image/", true) ||
-      StartsWithASCII(mime_type, "audio/", true) ||
-      StartsWithASCII(mime_type, "video/", true) ||
+  if (base::StartsWithASCII(mime_type, "image/", true) ||
+      base::StartsWithASCII(mime_type, "audio/", true) ||
+      base::StartsWithASCII(mime_type, "video/", true) ||
       mime_type == "application/x-shockwave-flash") {
     return base::File::FILE_OK;
   }
   return base::File::FILE_ERROR_SECURITY;
 }
 
 void HoldFileRef(
     const scoped_refptr<storage::ShareableFileReference>& file_ref) {
 }
 
@@ skipping 618 matching lines @@
     return base::File::FILE_ERROR_FAILED;
 
   if (!file_info.is_directory &&
       !media_path_filter_->Match(file_path)) {
     return failure_error;
   }
 
   *local_file_path = file_path;
   return base::File::FILE_OK;
 }